fix null error when plugin doesn't set Action  (#656)
fix null error when plugin doesn't set Action  (#656)
zlphoenix/Wox,danisein/Wox,yozora-hitagi/Saber,JohnTheGr8/Wox,Launchify/Launchify,JohnTheGr8/Wox,medoni/Wox,Launchify/Launchify,yozora-hitagi/Saber,jondaniels/Wox,Megasware128/Wox,zlphoenix/Wox,Megasware128/Wox,medoni/Wox,danisein/Wox,jondaniels/Wox